Add support for Python 3.14 compatibility

[Copilot]

• Add Python 3.14 to CI workflow test matrix
• Update .python-version to 3.14
• Verify pyproject.toml compatibility (already supports >=3.6)
• Run tests to validate compatibility (70 passed, 1 skipped)
• Code review and finalize changes

Original prompt

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This section details on the original issue you should resolve

<issue_title>Add support for Python 3.14</issue_title>
<issue_description>Extend the project to ensure compatibility and support for Python 3.14. This may include updating dependency requirements and adding tests to verify functionality (if required).

TODO:

• Update setup/configuration files to allow Python 3.14.
• Identify and resolve any compatibility issues.
• Add or update CI workflows to test with Python 3.14.</issue_description>

<agent_instructions>Touch minimal files</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Add support for Python 3.14 #51

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